fix: throw better error if Huffman Table can't be created (jpeg-js#60)

donmahallem · patrickhulce · commit d340c1b21133 · 2020-01-14T11:26:38.000-06:00
diff --git a/lib/decoder.js b/lib/decoder.js
@@ -67,6 +67,8 @@ var JpegImage = (function jpegImage() {
         p = code.pop();
         p.children[p.index] = values[k];
         while (p.index > 0) {
+          if (code.length === 0)
+            throw new Error('Could not recreate Huffman Table');
           p = code.pop();
         }
         p.index++;

Original file line number	Diff line number	Diff line change
`@@ -67,6 +67,8 @@ var JpegImage = (function jpegImage() {`
`67`	`67`	`p = code.pop();`
`68`	`68`	`p.children[p.index] = values[k];`
`69`	`69`	`while (p.index > 0) {`
	`70`	`+ if (code.length === 0)`
	`71`	`+ throw new Error('Could not recreate Huffman Table');`
`70`	`72`	`p = code.pop();`
`71`	`73`	`}`
`72`	`74`	`p.index++;`